New contributions to the knowledge of fish migrations in the Paraná River

Studies on fish migration in the Paraná River were performed during the period 1975-1981, mainly in the join of Paraná and Paraguay Rivers, as well as the High Paraná, based on capturing, tagging and releasing of fishes. Lea's hydrostatie tag was used to mark fish, obtained by netting to avoid...

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Autores principales: Bonetto, Argentino A., Canón Verón, Marta, Roldán, Dante
Formato: Artículo revista
Lenguaje:Español
Publicado: Centro de Ecología Aplicada del Litoral (Consejo Nacional de Investigaciones Científicas y Técnicas - Universidad Nacional de Nordeste) 2023
Acceso en línea:https://revistas.unne.edu.ar/index.php/eco/article/view/7180
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Revistas UNNE - Universidad Nacional del Noroeste (UNNE) de Universidad Nacional del Nordeste
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spelling I48-R154-article-71802024-02-16T11:12:14Z New contributions to the knowledge of fish migrations in the Paraná River Nuevos aportes al conocimiento de las migraciones de peces en el Río Paraná Bonetto, Argentino A. Canón Verón, Marta Roldán, Dante Studies on fish migration in the Paraná River were performed during the period 1975-1981, mainly in the join of Paraná and Paraguay Rivers, as well as the High Paraná, based on capturing, tagging and releasing of fishes. Lea's hydrostatie tag was used to mark fish, obtained by netting to avoid capture injuries.Resulta are as follows:- Registered migratory tendencies of Charaeoids fish confirm as a general rule, previous statements on the literature about the Paraná and tributaries.- Data obtained on other Charaeoids and Siluroids, permit to clarify unknown aspeets of their behaviour.- Obtained data are partially contradicting with Godoy’s  statements on fish migration in the Upper Paraná, but agree with other authors’ results on the Middle and Lower reach. So, two main kinds of migratory behaviour are shown: one related to breeding in which fish are recorded to move long distances, is the “active migrants” ecotype. The other referred to species intermixed with the above mentioned, in which fish do not require a great displacement for that purpose, is of the "passive migrants" ecotype.  It seems to be a high proportion of passive migrants among fish populations in the river reaches studied, particularly in the Middle Paraná River. Studies on fish migration in the Paraná River were performed during the period 1975-1981, mainly in the join of Paraná and Paraguay Rivers, as well as the High Paraná, based on capturing, tagging and releasing of fishes. Lea's hydrostatie tag was used to mark fish, obtained by netting to avoid capture injuries.Resulta are as follows:- Registered migratory tendencies of Charaeoids fish confirm as a general rule, previous statements on the literature about the Paraná and tributaries.- Data obtained on other Charaeoids and Siluroids, permit to clarify unknown aspeets of their behaviour.- Obtained data are partially contradicting with Godoy’s  statements on fish migration in the Upper Paraná, but agree with other authors’ results on the Middle and Lower reach. So, two main kinds of migratory behaviour are shown: one related to breeding in which fish are recorded to move long distances, is the “active migrants” ecotype. The other referred to species intermixed with the above mentioned, in which fish do not require a great displacement for that purpose, is of the "passive migrants" ecotype.  It seems to be a high proportion of passive migrants among fish populations in the river reaches studied, particularly in the Middle Paraná River. Centro de Ecología Aplicada del Litoral (Consejo Nacional de Investigaciones Científicas y Técnicas - Universidad Nacional de Nordeste) 2023-12-06 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Artículo revisado por pares application/pdf https://revistas.unne.edu.ar/index.php/eco/article/view/7180 10.30972/eco.8167180 Ecosur; 1981: vol. 8, no. 16; 29-40 0325-108X spa https://revistas.unne.edu.ar/index.php/eco/article/view/7180/6613
institution Universidad Nacional del Nordeste
institution_str I-48
repository_str R-154
container_title_str Revistas UNNE - Universidad Nacional del Noroeste (UNNE)
language Español
format Artículo revista
author Bonetto, Argentino A.
Canón Verón, Marta
Roldán, Dante
spellingShingle Bonetto, Argentino A.
Canón Verón, Marta
Roldán, Dante
New contributions to the knowledge of fish migrations in the Paraná River
author_facet Bonetto, Argentino A.
Canón Verón, Marta
Roldán, Dante
author_sort Bonetto, Argentino A.
title New contributions to the knowledge of fish migrations in the Paraná River
title_short New contributions to the knowledge of fish migrations in the Paraná River
title_full New contributions to the knowledge of fish migrations in the Paraná River
title_fullStr New contributions to the knowledge of fish migrations in the Paraná River
title_full_unstemmed New contributions to the knowledge of fish migrations in the Paraná River
title_sort new contributions to the knowledge of fish migrations in the paraná river
description Studies on fish migration in the Paraná River were performed during the period 1975-1981, mainly in the join of Paraná and Paraguay Rivers, as well as the High Paraná, based on capturing, tagging and releasing of fishes. Lea's hydrostatie tag was used to mark fish, obtained by netting to avoid capture injuries.Resulta are as follows:- Registered migratory tendencies of Charaeoids fish confirm as a general rule, previous statements on the literature about the Paraná and tributaries.- Data obtained on other Charaeoids and Siluroids, permit to clarify unknown aspeets of their behaviour.- Obtained data are partially contradicting with Godoy’s  statements on fish migration in the Upper Paraná, but agree with other authors’ results on the Middle and Lower reach. So, two main kinds of migratory behaviour are shown: one related to breeding in which fish are recorded to move long distances, is the “active migrants” ecotype. The other referred to species intermixed with the above mentioned, in which fish do not require a great displacement for that purpose, is of the "passive migrants" ecotype.  It seems to be a high proportion of passive migrants among fish populations in the river reaches studied, particularly in the Middle Paraná River.
publisher Centro de Ecología Aplicada del Litoral (Consejo Nacional de Investigaciones Científicas y Técnicas - Universidad Nacional de Nordeste)
publishDate 2023
url https://revistas.unne.edu.ar/index.php/eco/article/view/7180
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first_indexed 2024-08-21T22:39:05Z
last_indexed 2024-08-21T22:39:05Z
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